Rolls for rolling gjrder-rails



(No Model!) 8 3 sheets -sheet 1. 8 A. J. MUXHAM,

ROLLS FOR ROLLING GIRDER RAILS. No. 878,209. Patented Feb. 21, 1888.

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(No Model.) 3 Sheets-Sheet '2. A. J. MOXHAM.

ROLLS POE ROLLING GIRDER RAILS.

No. 378,209. Patented Feb. 21, 1888.

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(No Model.) A Q 3 Sheets-Sheet 3.

A. J. MOXHAM.

ROLLS FOR ROLLING GIRDER'RAILS. No. 378,209. Patented Feb. 21, 1888.

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ARTHUR J. MOXHAM, OF JOHNSTOWVN, PENNSYLVANIA.

ROLLS FOR ROLLING GlRDER-RAILS.

SPECIFICATION forming part of Letters Patent No. 378,209, dated February21, 1888.

Application filed December 19, 1887.

To all whom it may concern.-

Be it known that I, ARTHUR J. MQXHAM, of Johnstown, in the county ofOambria and State of Pennsylvania, have invented new and useful Rollsfor Completing the Rolling of Partially-Finished Blank Forms forGirder-Rails, which invention is fully set forth and illustrated in thefollowing specification and ac compan yin g drawings.

The object of this invention is to prepare a blank which can be rolledby special mechanism into two different forms of girder-rail.

The invention will first be described in detail, and then particularlyset forth in the claims.

In the accompanying drawings, Figure 1 illustrates in front elevation21. pair of roughing-rolls. Fig. Zillustrates in elevation apair offinishing-rolls. Fig. 3 illustrates one form of rail which the blank canbe subsequently rolled into after it leaves the rolls shown in Fig. 2.Fig. 4. illustrates another form offinished rail which the blank can besubsequently rolled. into after it leaves the roll illustrated in Fig.2. Fig. 5 illustrates the blank as it leaves the last roll-pass,numbered 5 ofFig. 1.

The several figures above mentioned and the several operationspertaining to the invention will now be described as follows:

Fig. 1 shows five passes, No. 1 being an ordinary forming-pass, No. 2 anedging-pass,

No. 3 a dummy pass, No. 4 an edging-pass, and No. 5 a dummy pass.

Fig. 2 shows passes numbered 6, 7, 8, and 9, all being edging-passes. Inall said edgingpasses heavy draft is maintained on the web portion ofthe metal forming the rail being rolled, ample room being provided forthe spread of metal in order to permit of such draft. In the earlierpasses compensation for the wire-drawing therein put upon the extremeedges of the lower flanges-which are very widc-and which wire-drawing isexcessive, owing to the heavy draft on the center or web portion of themetal being rolled, is effected by the use of the two dummy passes Nos.3 and 5 above named, more of such passes being preferable, rather thanless. It will be observed that the action of these dummy passes is topinch and spread on the Serial No. 258,285. (No model.)

extreme end of the lower flange of the rails only, as will be seen bycomparing the dummy pass No. 5 with the shape of its prccedingedgepass,No. 4, from which rolled metal comes ready for said pass No. 5. Theeffect of this combination of dummy and edging passes is toproduceathickened center portion of the lower flange of the blank rail,and after the dummy action a thinner edge portion, as illustrated at thepoints at x of Fig. 5; but the inner thickened portions of said flangeare at such points that the tongue of the pass can shape said pointswith the minimum reduction oft-he outer points, x m, by wire-drawing. Bythus reducing the outer edges the action of the tongue of the rolls andthese thickened portions is practically to localize or concentrate thework at this point, wire-drawing being thereby re duced. By this means amore rapid reduction of metal is effected. From the last pass, No. 9,the blank can be transferred to any desirable grooving-rolls, such ashave been lately invented and brought into use; or else grooves can berolled in the same to complete a section of rail, such as illustrated inFig. 3; or other rolling in one or two passes can be effected tocomplete a finished section, such as is shown in Fig. 4:.

I do not limit myself to the exact number or distribution of passesshown, as the number of passes and their distribution into roughing andfinishing passes is to a certain extent arbitrary, being influenced bythe length and diameter of the rolls, a light train of rolls call ingfor more passes with lighter draft than a heavy roll train. It is alsoevident that the rolls can, if desired, be made threehigh instead oftwohigh, as shown.

Having thus fully described my said improvement, as of my invention Iclaim- 1. Rolls for rolling wide-fiangedgirdeurails, provided with oneor more dummy passes, whose action in said passes is concentrated on theouter or extreme edges of the lower flanges of the rails, substantiallyas and for the purposes set forth.

2. Rolls for rolling wide-flanged girder-rails, provided with one ormore dummy passes, whose action in said passes is concentrated on theouter or extreme edges of the lower flanges of the rails, and withedgingpasses, wherein or form shown in the accompanying drawings, themaximum draft of the rolls is eoneenand numbered from 1 to 9, inclusive,as and trated on the inner and thicker points of said for the purposesset forth.

flanges, substantially as and for the purposes ARTHUR J. MOXHAM. 5 setforth. Vitnesses: I

C. R. PowEL L, CLAUDE M. JOHNSON.

3. Rolls forrolling wide-flanged girder-rails, provided with passessubstantially of the shape

